Answer:
One of these specifications is a characteristic known as rifling, which refers to the spiral lands and grooves placed into the firearm's barrel to impart a spin on the bullet for accuracy. ... Examiners generally test fire into a water recovery tank to obtain comparison bullets for evaluation under the microscope.
Answer:
sorry I don't know understand
<h2>Answer</h2>
- Wind
- Sunlight
- Plants
- Soil
- Coal
- Minerals
- Water
- Animals
In short it's natural resources.
